Study on Easy Correcting Method of Thermograph for Inspection of Internal Defect of Reinforced Concrete Wall

• Project/Area Number: 20560517
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Building structures/materials
• Research Institution: Kagoshima University
• Principal Investigator: KUROKAWA Yoshiyuki Kagoshima University, 理工学研究科(工学系), 准教授 (50242839)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2010: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000); Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: 赤外線サーモグラフィ法 / 内部欠陥 / 表面温度分布 / 日射吸収 / 色彩値 / 熱伝導 / アクティブ法 / ハロゲンライト / 塗装

Research Abstract

The intensity spectrum of the halogen light is approximately figured as a Gaussian distribution, and the distribution of intensity of the light is approximately figured as an oval curve, while the intensity is stable after a few minutes from the turning on.
The absorbed heat on the surface of a wall is obtained by multiplying spectrum of the halogen light by absorption ratio in each wavelength.